История Востока. В 6 т. Т. 2. Восток в средние века.]М., «Восточная литература», 2002. ISBN5-02-017711-3 (History of the East. In 6 volumes. Volume 2. Moscow, publishing house of the Russian Academy of sciences «East literature»): (The multi-ethnic population of Albania left-bank at this time is increasingly moving to the Persian language. Mainly this applies to cities of Aran and Shirwan, as begin from 9-10 centuries named two main areas in the territory of Azerbaijan. With regard to the rural population, it would seem, mostly retained for a long time, their old languages, related to modern Daghestanian family, especially Lezgin. (한국어 텍스트: 그 시대에 알바니아의 좌측-제방의 다민족 인구는 점점더 페르시아어를 사용하는 사람들이 많아졌다. 대개 그 언어는 9~10세기가 되어 이름 지어진 두 주요 지역인 아란과 시르완의 도시들에서 적용되었다. 시골 인구에 관해서는 현대 자게스타니아 가문, 특히 레즈긴과 관련된 그들의 옛 언어들이 오랜 기간 동안 대부분 보존되었을 것이다.) (Russian text: Пестрое в этническом плане население левобережнoй Албании в это время все больше переходит на персидский язык. Главным образом это относится к городам Арана и Ширвана, как стали в IX-Х вв. именоваться два главные области на территории Азербайджана. Что касается сельского населения, то оно, по-видимому, в основном сохраняло еще долгое время свои старые языки, родственные современным дагестанским, прежде всего лезгинскому.
Strabo had no knowledge of any city in Albania, although in the first century AD Pliny mentions the initial capital of the kingdom - Qabala. The name of the city was pronounced in many different ways including Kabalaka, Shabala, Tabala, present-day Qabala
Bruno Jacobs, "ACHAEMENID RULE IN Caucasus" in Encyclopædia Iranica. January 9, 2006. Excerpt: "Achaemenid rule in the Caucasus region was established, at the latest, in the course of the Scythian campaign of en:Darius I in 513-12 BCE. The Persian domination of the cis-Caucasian area (the northern side of the range) was brief, and archeological findings indicate that the Great Caucasus formed the northern border of the empire during most, if not all, of the Achaemenid period after Darius"
Nevertheless, "despite being one of the chief vassals of Sasanian Shahanshah, the Albanian king had only a semblance of authority, and the Sassanid marzban (military governor) held most civil, religious, and military authority.
